URL url = this.getClass().getResource("EJBConfig.xml");
try {
File xmlFile = new File(URLDecoder.decode(url.getFile(),"UTF-8"));
if(xmlFile.exists())
System.out.println("OK");
} catch (UnsupportedEncodingException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}